Steps to reproduce:
1. Add map with two hosts
2. Create link between the two hosts
3. Assign trigger to the link (I added "HTTPS service is down on

{HOST.NAME}") and save map
4. Export map
5. Import map

The import map fails with an error like this:
Cannot find trigger "HTTPS service is down on {HOST.NAME}

" used in map "Test MAP".

If I remove the trigger on the link; save; export; import; Then import succeeds.